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Ragan MA, Beiko RG.Ragan MA, et al. Among authors: beiko rg.Philos Trans R Soc Lond B Biol Sci. 2009 Aug 12;364(1527):2241-51. doi: 10.1098/rstb.2009.0031.Philos Trans R Soc Lond B Biol Sci. 2009.PMID: 19571244Free PMC article.Review.
Beiko RG, Harlow TJ, Ragan MA.Beiko RG, et al.Proc Natl Acad Sci U S A. 2005 Oct 4;102(40):14332-7. doi: 10.1073/pnas.0504068102. Epub 2005 Sep 21.Proc Natl Acad Sci U S A. 2005.PMID: 16176988Free PMC article.